This image from Reddit builds the case that a tank design for Command & Conquer Tiberium Alliances appears quite similar to a Games Workshop-designed tank from the Warhammer 40K series. Games Workshop is known for fiercely defending its intellectual property rights, so there is rampant speculation that if this claim turns out to be valid, legal action is likely to follow. Thanks Strategy Informer.

We are encountering people who counterfeit our miniatures and products more and more frequently. Counterfeiting is a crime in most countries worldwide. In addition to the other penalties, you can go to prison for counterfeiting. The same is true of peer-to-peer file sharing - if you have not paid for the material and you download it using peer-to-peer software, you are engaging in illegal activity. The same is true even if you already own a copy of the relevant Codex or Army Book. Please remember that Games Workshop does not produce its rule books or codices in electronic format - if you ever see any such material in electronic format, it is likely to be the product of criminal or infringing activity.

BE AWARE that we will happily spend money bringing counterfeiters and other infringers to justice, regardless of the cost. Such activities kill the hobby for everyone.

This is not exactly the same thing as saying they'll sue you, personally, for posting a picture of your painted minis, or making a fansite. They clearly want to come to an accommodation with the people generating good buzz for them with mods, fansites, etc., but not counterfeiters or file sharers. I mean, you make them sound like blithering idiots, but the history I can find on Google and their stated policies seem fairly reasonable.

And also, I really have to stress that while the tank posted in Blue's post is questionable, the second one, linked in this thread, is utterly indefensible. If they can't get sued for that then no one can get sued for anything.